Classifications

• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D519/00—Heterocyclic compounds containing more than one system of two or more relevant hetero rings condensed among themselves or condensed with a common carbocyclic ring system not provided for in groups C07D453/00 or C07D455/00
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
  • C09B19/00—Oxazine dyes
  • C09B19/02—Bisoxazines prepared from aminoquinones
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
  • C09B62/00—Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves
  • C09B62/02—Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves with the reactive group directly attached to a heterocyclic ring
  • C09B62/04—Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves with the reactive group directly attached to a heterocyclic ring to a triazine ring
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
  • C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
  • C09B67/0033—Blends of pigments; Mixtured crystals; Solid solutions
  • C09B67/0034—Mixtures of two or more pigments or dyes of the same type
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
  • C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
  • C09B67/0033—Blends of pigments; Mixtured crystals; Solid solutions
  • C09B67/004—Mixtures of two or more reactive dyes
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
  • C09D11/00—Inks
  • C09D11/30—Inkjet printing inks
  • C09D11/32—Inkjet printing inks characterised by colouring agents
  • C09D11/328—Inkjet printing inks characterised by colouring agents characterised by dyes
• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
  • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
  • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
  • D21H21/28—Colorants ; Pigments or opacifying agents

Definitions

• the invention relates to dioxazine compounds containing sulphonic acid groups and salts thereof and mixtures of these compounds which may be in internal or external salt form. They are suitable for use as dyestuffs.
• US5122605 discloses a sulpho group-containing dioxazine compounds useful for dyeing or printing hydroxy group- or nitrogen-containing organic substrates, optionally combined with a special after-treatment of the dyed or printed textiles thus obtained to improve their wet fastness properties.
• US5653773 discloses a process for dyeing or printing fibre materials containing hydroxyl groups wherein at least one blue-dyeing dioxazine compound is used together with at least one yellow-dyeing and/or at least one red-dyeing and/or at least one navy blue- or black-dyeing dyestuff.
• radicals X, Y and Z contain no chromophoric group.
• any amine H-X, H-Y or H-Z has a molecular weight in the range of 50 to 500, preferably 50 to 400. Where such an amine contains ring systems, it preferably contains 1 to 4 rings and most preferably has only 1 or 2 rings.
• Such amine preferably contains at least one hydrophilic group which independently can be anionic, cationic or non-ionogenic. Examples of anionic hydrophilic groups are carboxy or sulphonic acid groups.
• Examples of cationic hydrophilic groups are mono-(C 1-4 -alkyl)- or di(C 1-4 -alkyl)amino groups comprising a protonatable nitrogen atom or a quaternary ammonium group, wherein each C 1-4 -alkyl group can be substituted by halogen, hydroxy, C 1-4 -alkoxy, phenyl or phenoxy. Any phenyl or naphthyl ring present in the amine may be unsubstituted or substituted by one, two or three groups selected from halogen, hydroxy, C 1-4 -alkyl, C 1-4 -alkoxy, phenoxy, carboxy or sulphonic acid.
• Any heterocyclic ring present in the amine is a 5-or 6-membered ring containing one or two hetero atoms selected from N, O or S, which heterocyclic ring is unsubstituted or substituted by one or two C 1-4 -alkyl groups.
• Preferred H-Z are ammonia and aliphatic amines, preferably substituted with a hydroxy, carboxy, alkoxy or sulphonic acid group, e.g. ethanolamine, diethanolamine, isopropanolamine, diisopropanolamine, 2-amino-hydroxypropane, glycine, N-methylethanolamine, 3-methoxy-propylamine, 1-aminoethyl-2-sulfonic acid and most preferably, 1-methylamino-ethyl-2-sulfonic acid; heterocyclic amines, e.g. morpholine, piperazine or hydroxy-ethylpiperazine; or N,N-diethylaminopropylamine and 1,2-diaminopropane.
• a hydroxy, carboxy, alkoxy or sulphonic acid group e.g. ethanolamine, diethanolamine, isopropanolamine, diisopropanolamine, 2-amino
• H-Z' is 1-methylamino-ethyl-2-sulfonic acid.
• M is hydrogen or a colorless cation or M is a cationic portion in a substituent X, Y or Z containing a cationic charge, to form an inner salt.
• the present invention further provides a process for the preparation of a compound of formula (Ib) according to formula (I) with the same definitions of the substituents as defined above, wherein one mole of a compound of formula (IV) or a mixture of compounds of formula (IV) with the same definitions of the substituents as in formula (Ib) is reacted with two moles of at least one compound of formula (V) wherein Hal signifies halogen, preferably chlorine, and X and Y independently have the same meanings as defined above, under dehydrohatogenating conditions, and, if in formula (Ib) anyone of X and Y has a significance other than halogen while in formula (V) the corresponding X or Y signifies halogen, and/or if in formula (Ib) Z has a significance other than halogen, the obtained condensation product of formula (VI) with the same definitions of the substituents as in formula (Ib) is reacted, with at least one corresponding amine of formula H-X, H-
• the compounds of formula (Ib) containing free basic groups may be converted wholly or in part into water-soluble salts by reacting with any inorganic or organic acids.
• the compounds of formula (Ib) containing carboxy or sulphonic acid groups may also be converted into water-soluble salts by reacting with any basic compound.
• the starting compounds, the amines of formula (IV) in the leuco form may be prepared by step-wise replacement of the chlorine atoms of cyanuric chloride whereby in a first and second step cyanuric chloride is reacted with a dioxazine compound of formula (VII) which can be identical or different, depending on the meanings of R 5 .
• the intermediately obtained dyestuff is brought into the leuco form of formula (IV) by reduction.
• This reduction process can be performed catalytically with hydrogen (and the usual catalysts palladium, platinum or nickel) or with other metals like iron, tin or zinc in the presence of acids.
• the reduction can be performed with sodium dithionite in water at pH values from 6 to 9, preferably 6.5 to 7.5, and temperatures from 15 to 45°C, preferably 20 to 30°C.
• the reducing agent is suitably used in double or triple molar amounts of the dyestuff to be reduced and all reduction and condensation reactions are performed in inert atmosphere, e.g. under nitrogen.
• the compounds of formula (V) may also be prepared by step-wise replacement of the chlorine atoms of cyanuric chloride whereby in a first and/or second step, cyanuric chloride is reacted with an amine of formula HX and/or an amine of formula HY.
• this first and second steps may be combined into one step.
• the single step is carried out at temperatures from 0 - 30°C and preferably at pH 4 - 6.
• the amine showing the higher selectivity with respect to the condensation reaction is introduced in the first step at a temperature of preferably 0 - 20°C more preferably 0 - 5°C. Both condensation steps may be carried out using the conventional reaction medium where the upper limit of pH is 7.
• the second step is preferably carried out at 10 - 40°C, more preferably 12 - 30°C.
• the starting compounds of formulae (VII), HX and HY are either known or may be prepared in accordance with known methods from available starting materials.
• the present invention further provides a process for the preparation of compounds of the formula (Ia), according to formula I wherein either R 3 ' is a divalent radical of formula (a) wherein P, Q, Z and n have the same meanings as defined above and R 2 ' is -NH 2 ; or R 3 ' is -NH- and R 2 ' is a radical of formula (b) wherein P, Q, Z and n have the same meanings as defined above, salts thereof and of mixtures of such compounds and/or salts, which comprises reacting a compound of formula (VIII) wherein either R 3 " is a divalent radical of formula (a') wherein P, Q and n have the same meanings as defined above and R 2 " is -NH 2 ; or R 3 " is -NH- and R 2 " is a radical of formula (b') wherein P, Q and
• the compounds of the above formula (VIII) can be prepared by reacting a compound of formula (IX) with about one equivalent of 2,4,6-trichlorotriazine, reacting the product of formula (X) thus obtained with 1,4-diaminobenzene-2-sulfonic acid and reacting the product (XI) thus obtained with another portion of the compound of the above formula (X).
• the compound of the above formula (X) can react (rather than with the 1,4-diaminobenzene-2-sulfonic acid) with any unreacted compound of the above formula (IX) and thus give a compound corresponding to the above formula (III) but in which Z' is chloro which, in the ultimate treatment with an amine H-Z', gives a compound of the above formula (III) in which Z' is a radical as defined above.
• the compound (XI) obtained when reacting a compound of the above formula (X) with 1,4-diaminobenzene-2-sulfonic acid can react (rather than with another portion of the compound of formula (X)) with any unreacted 1,4-diaminobenzene-2-sulfonic acid to give a compound of the above formula (II) wherein Z a radical of the above formula (c), or in the ultimate treatment with an amine H-Z give a compound of the above formula (II) wherein Z is a radical of formula (d) or a radical as defined above.
• a mixture of compounds thus obtained can be converted into a mixture of corresponding salts and, similarly, a mixture of salts thus obtained can be converted into a mixture of the corresponding compounds or into a mixture of other salts.
• Suitable amines H-Z' are ammonia and aliphatic amines, preferably substituted with a hydroxy, carboxy, alkoxy and/or sulphonic acid group, e.g. ethanolamine, diethanolamine, isopropanolamine, diisopropanolamine, 2-amino-hydroxypropane, glycine, N-methylethanolamine, 3-methoxy-propylamine, 1-aminoethyl-2-sulfonic acid and most preferably, 1-methylamino-ethyl-2-sulfonic acid; aromatic amines, preferably substituted with a carboxy or sulphonic acid group, e.g.
• aniline 4- or 3-sulpho-aniline, 4- or 3-carboxy-aniline; and heterocyclic amines, e.g. morpholine, piperazine or hydroxyethylpiperazine; or N,N-diethylaminopropylamine and 1,2-diaminopropane.
• heterocyclic amines e.g. morpholine, piperazine or hydroxyethylpiperazine; or N,N-diethylaminopropylamine and 1,2-diaminopropane.
• Suitable amines H-Z are the same as for H-Z' except the aromatic amines, with the proviso, that very reactive aromatic amines are suitable.
• the compound of formula (IX), 3,10-diamino-6,13-dichloro-4,11-triphendioxazine disulphonic acid, is known.
• the compound of formula (IX) is conveniently taken up in water, and the pH is brought to about 8.0 - 8.5 by addition of caustic alkali, preferably an aqueous lithium hydroxide solution.
• the 2,4,6-trichlorotriazine is conveniently utilized in the form of an aqueous suspension containing a small amount of a conventional surfactant, which is slowly added, under cooling to a temperature of about 0 - 10°C, preferably about 5 - 8°C, to the aqueous solution of the compound of formula (IX) under stirring, the pH of the reaction mixture being kept at about 8.0 - 8.5 by continuous addition of further caustic alkali, preferably aqueous lithium hydroxide solution, and the temperature being kept at about 0 - 10°C, preferably at about 5 - 8°C. Normally, the reaction is finished after about one hour. There is thus obtained an aqueous suspension of the compound of formula (X).
• This solution is then added to the aforesaid suspension of the compound of formula (X) at a temperature of about 40 - 55°C, preferably about 45 - 50°C, and after this addition the pH, which has reached a value of about 5.5 - 6, is kept at this value by addition of caustic alkali, preferably aqueous lithium hydroxide solution. Normally, the reaction is finished after about 4 - 5 hours.
• the second half of the aforesaid suspension of the compound of formula (X) is then given to the suspension obtained in the foregoing operation, conveniently at a temperature of about 40°C, whereby the pH raises to about 6 - 7.
• the mixture is then heated, conveniently to a temperature of about 65 - 80°C, preferably about 72 - 75°C, which results in a decrease of the pH to about 5.5 - 6 at which value the pH is kept by addition of caustic alkali, preferably aqueous lithium hydroxide solution. In normal circumstances the reaction is finished after about 5 - 6 hours.
• the suspension obtained in the foregoing operation is treated with 1-methylamino-ethyl-2-sulfonic acid which is conveniently utilized in the form of an aqueous solution of its sodium salt, or any other amine.
• This solution is added to the aforesaid suspension at a temperature of about 80 - 90°C, preferably about 82 - 86°C, whereby the pH rises from about 5 to about 10 and is then brought to and kept at about 8.2 - 8.6, preferably about 8.4, by addition of caustic alkali, preferably aqueous lithium hydroxide solution.
• the reaction is completed after 4 - 5 hours.
• the resulting solution contains a mixture of compounds of formulae (I), (II) and (III), as defined hereinabove, in the form of alkali metal salts, preferably salts with lithium and sodium.
• This solution can be purified by conventional procedures, e.g. by filtration and/or ultrafiltration, and concentrated. If desired, the salts can be converted into the corresponding compounds of formulae (I), (II) and (III) or into other salts according to methods which are readily available to those skilled in the art.
• compounds of formulae (I), (II) and (III) which may have been obtained by carrying out the synthesis described hereinabove in a slightly different manner, can be converted into salts.
• Suitable salts include the aforementioned lithium and sodium salts as well as potassium salts, ammonium salts etc. and inner salts.
• the compounds according to the invention or their salts may be used for dyeing cationic dyeable materials such as: homo- or mixed-polymers of acrylonitrile, acid modified polyester or polyamide; wool; leather including low affinity vegetable-tanned leather; cotton; bast fibers such as hemp, flax, sisal, jute, coir and straw; regenerated cellulose fibers, glass or glass products comprising glass fibers; and substrates comprising cellulose for example paper and cotton. They may also be used for printing fibers, filaments and textiles comprising any of the above mentioned materials in accordance with known methods. Printing may be effected by impregnation of the material to be printed with a suitable printing paste comprising one or more compounds of the present invention.
• the type of printing paste employed may vary depending on the material to be printed. Choice of a suitable commercially available printing paste or production of a suitable paste, is routine for one skilled in the art. Alternatively the compounds of the present invention may be used in the preparation of inks suitable for example for jet printing, in accordance with conventional methods.
• the dyestuffs are used for dyeing or printing of paper e.g., sized or unsized, wood-free or wood-containing paper or paper-based products such as cardboard. They may be used in continuous dyeing in the stock, dyeing in the size press, in a conventional dipping or surface coloring process. The dyeing and printing of paper is effected by known methods.
• the dyeings and prints and particularly those obtained on paper show good fastness properties.
• the compounds of formula (I) may be converted into dyeing preparations. Processing into stable liquid, preferably aqueous, or solid (granulated or powder form) dyeing preparations may take place in a generally known manner.
• suitable liquid dyeing preparations may be made by dissolving the dyestuff or its salt in suitable solvents such as formamide, dimethylformamide, urea, glycols and ethers thereof, dextrin or addition products of boric acid with sorbitol which may be used together with water, optionally adding an assistant, e.g. a stabilizer.
• suitable solvents such as formamide, dimethylformamide, urea, glycols and ethers thereof, dextrin or addition products of boric acid with sorbitol which may be used together with water, optionally adding an assistant, e.g. a stabilizer.
• Such preparations may be obtained, for example, as described in French patent specification No. 1,572,030.
• the compounds of formula (I) (in the corresponding salt form) have good solubility especially in cold water. Owing to their high substantivity the compounds of the present invention exhaust practically quantitatively and show a good build-up power. They can be added to the stock directly, i.e. without previously dissolving, as either a dry powder or granulate, without reducing the brilliance or the yield of color. They can also be used in soft water without loss of yield. They do not mottle when applied on paper, are not inclined to give two-sided dyeing on paper and are practically insensitive to filler or pH variations. They operate over a broad pH range, in the range of from pH 3 to 10. When producing sized or unsized paper, the waste water is essentially colorless. This feature, which is extremely important from an environmental view-point, when compared with similar known dyes, shows a marked improvement. A sized paper dyeing when compared with the corresponding unsized paper dyeing does not show any decrease in strength.
• the paper dyeings or printings made with the compounds, in particular the metal-free forms, according to the invention are clear and brilliant and have very good light fastness: On exposure to light for a long time, the shade of the dyeing fades tone in tone. They show very good wet fastness properties; being fast to water, milk, fruit juice, sweetened mineral water, tonic water, soap and sodium chloride solution, urine etc. Furthermore, they have good alcohol fastness properties. The wet fastness properties are improved compared to known dyes showing otherwise similar properties. They do not exhibit a tendency towards two-sidedness.
• Paper dyed or printed with the compounds of the present invention can be bleached oxidatively, a feature which is important for the recycling of waste and old paper/paper products. This property, together with the improved backwater results and wet-fastness, shows a marked improvement over known dyes having otherwise similar properties.
• the compounds of the present invention may also be used to dye paper containing wood-pulp where even dyeings, having good fastness properties are obtained. Furthermore, they may be used for the production of coated paper in accordance with known methods. Preferably when coating, a suitable filler, for example kaolin, is employed in order to give a one-side coated paper.
• a suitable filler for example kaolin
• the compounds of the present invention are also suitable for dyeing in combination with other dyes for example other cationic or anionic dyes.
• the compatibility of the compounds of the present invention when used as a dye in mixtures with other commercially available dyes, may be determined according to conventional methods. The thus obtained dyeings have good fastness properties.
• the compounds of the present invention are also suitable for the preparation of ink jet inks.
• the invention further provides a substrate which has been dyed or printed with a compound of the present invention.
• the substrate may be selected from any of the above mentioned substrates.
• a preferred substrate is a substrate comprising cellulose such as cotton or paper or a paper based product.
• the most preferred substrate is paper or a paper based product.
• 640 parts of the colloidal solution obtained in step d) are put into a reaction vessel and 10 parts 1-methylamino-ethyl-2-sulfonic acid in the form of the sodium salt as a solution is added.
• the mixture is heated to 80°C and left during 1 hour and over night at 80°C and pH 8 (if necessary, by addition of lithium hydroxide) with normal air present.
• the leuco form is oxidized and the dyestuff is precipitated with sodium chloride, filtered and dried at 60°C in vacuum. 24.8 parts of the blue dyestuff with the formula is obtained in the mixed lithium/sodium salt form.
• ⁇ max is 564.4 nm (in water and 1 % acetate).
• Example 2 Following the procedure of Example 1 the condensation of intermediate C was performed with diethanolamine. 640 parts of the colloidal solution of step d) are put into a reaction vessel and 6 parts of diethanolamine are added. The mixture is heated to 80 - 85°C and left over night at 80 - 85°C and pH 8 (if necessary by addition of lithiumhydroxide) with normal air present. At the same time as the condensation takes place, the leuco form is oxidized. The reaction mixture is cooled to 50°C and filtered. 650 parts process solution are ultrafiltrated at 40 - 50°C using a suitable membrane (e.g. G10; G20; G50) and concentrated up to 400 parts solution. The obtained liquid dyestuff formulation contains only traces of the remaining inorganic salts and exhibits perfect storage stability. ⁇ max is 555.7 nm (in water and 1 % acetate).
• ⁇ max is 555.7 nm (in water and 1 % acetate).
• step g) instead of using 75 parts of 1-methylamino-ethyl-2-sulfonic acid solution 22.5 parts of 1-amino-ethyl-2-sulfonic acid in 50 parts water are used under the same condition as mentioned in step g). After 4 - 5 hours the reaction is complete. The dyestuff is precipitated with sodium chloride, filtered and dried at 60°C in vacuum. 130 parts of the dyestuff are obtained. ⁇ max is 571.5 nm (in water and 1% acetate).
• Example 19 further dyestuffs can be obtained. But instead of using 1-methylamino-ethyl-2-sulfonic acid as in Example 19 step g) the following substances H-Z as illustrated in Table 2 are used. Further analogously or instead as in step d) the following compounds S are used in the corresponding molar amount.
• Example 19 0.2 parts of the dyestuff solution obtained in step h) of Example 19 are dissolved in 100 parts of water. This solution is added to 100 parts of chemically bleached sulfite cellulose which have been ground with 2000 parts of water in a Hollander. After mixing thoroughly for 15 minutes, resin size and aluminium sulfate are added thereto. Paper produced in this way has a brilliant blue nuance and exhibits perfect light and wet fastness.
• An absorbent length of unsized paper is drawn at 40 - 50°C through a dyestuff solution having the following composition: 0.3 parts of the dyestuff solution obtained in step h) of Example 19; 0.5 parts of starch; and 99.0 parts of water.
• the excess dyestuff solution is squeezed out trough two rollers.
• the dried length of paper is dyed a brilliant blue shade.
• the paper dyeing obtained shows good fastness properties.
• the dyestuff of Examples 1 - 18 and 20 - 33 may also be used for dyeing by a method analogous to that of Application Examples A to C.
• the paper dyeings obtained show good fastness properties.
• Example 19 2 parts of the dyestuff solution obtained in step h) of Example 19 are dissolved in 1000 parts of demineralised water at 40°C. 100 parts of a pre-wetted cotton textile substrate are added, and the bath is heated to the boiling point over 30 minutes and held at the boil for one hour.
• the dyestuffs according to Examples 1 - 18 and 20 - 33 may be used for dyeing cotton.
• 100 parts freshly tanned and neutralized chrome leather are agitated for 30 minutes in a vessel with a liquor consisting of 250 parts of water at 55°C and 0.5 parts of the dyestuff of Example 1 and then treated in the same bath for 30 minutes with 2 parts of an anionic fatty licker based on sulphonated train oil.
• the leather is then dried and prepared in the normal way, giving a leather evenly dyed in a brilliant blue shade.
• the dyestuffs according to Examples 2 - 33 may be used for dyeing leather.
• Water is added to a dry pulp in a Hollander, said dry pulp consisting of 60 % (by weight) of mechanical wood pulp and 40 % (by weight) of unbleached sulfite cellulose, and the slurry is beaten in order to obtain a dry content slightly exceeding 2.5 % and having a beating degree of 40° SR (degrees Schopper-Riegler).
• the slurry is then exactly adjusted to a high density dry content of 2.5 % by adding water. 5 parts of a 2.5 % aqueous solution of the dyestuff obtained in step h) of Example 19 are added to 200 parts of the above resulting slurry.
• the mixture is stirred for about 5 minutes and, after addition of 2 % (by weight) resin size and then 4 % (by weight) alum (based on the dry weight), stirring is continued for a few minutes until the mixture is homogeneous.
• the resulting pulp is diluted with 500 parts of water to a volume of 700 parts and then used for the production of paper sheets by suction on a sheet former.
• the resulting paper sheets are dyed a brilliant blue.
• the waste water exhibits a substantially low residual dye concentration.
• the dyestuffs according to Examples 1 - 18 and 20 - 33 may be used for dyeing paper.
• 100 parts of cotton tricot, which have been dyed with the dyestuff of Example 1 analogously to the method of example F in ca. 1/1 standard depth, are mixed without intermediate drying in 1000 parts of tap water at 25°C with 5 parts of sodium chloride and 4 parts of an after-treatment agent obtained from the reaction of diethylenetriamine with dicyandiamide.
• the pH value of the dye bath is set at 6.5 - 7.
• the bath is heated to 60°C over the course of 20 minutes, and this temperature is maintained for a further 20 minutes. Afterwards, the material is'rinsed with cold tap water.
• the red cotton dyeing which has been after-treated in this way has perfect washing fastness and very good light fastness.
• the dyestuffs according to Examples 2 - 33 may be used for dyeing cotton.
• the yellow cotton dyeing thus obtained is notable for its perfect washing fastness. At the same time, there is a considerable improvement in the creasing fastness, and reduced swelling value of the cellulosic fibres.
• the dyestuffs according to Examples 2 - 33 may be used for dyeing cotton.
• Water is added to a dry pulp in a Hollander consisting of 50 % (by weight) of chemically bleached sulphite cellulose obtained from pinewood and 50 % (by weight) of chemically bleached sulphite cellulose obtained from birchwood, and the slurry is ground until a degree of grinding of 35° SR is reached. The slurry is then adjusted to a high density dry content of 2.5 % by adding water, and the pH of this suspension is adjusted to 7.
• dyestuffs consisting of any one of the dyestuffs of Examples 1 - 18 and 20 - 33. In all cases, paper sheets are formed having a brilliant blue shade.
• Example 19 2.5 parts of the dyestuff obtained in Example 19 are dissolved with stirring at 25°C in a mixture of 20 parts diethyleneglycol and 77.5 parts water to obtain a printing ink suitable for ink jet printing.

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• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Engineering & Computer Science (AREA)
• Materials Engineering (AREA)
• Wood Science & Technology (AREA)
• Life Sciences & Earth Sciences (AREA)
• Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
• Paper (AREA)
• Luminescent Compositions (AREA)
• Inks, Pencil-Leads, Or Crayons (AREA)
• Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
• Coloring (AREA)

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• 1999
  • 1999-04-15 JP JP2000544673A patent/JP2002512270A/ja not_active Withdrawn
  • 1999-04-15 DE DE69923964T patent/DE69923964T2/de not_active Expired - Lifetime
  • 1999-04-15 ES ES99911971T patent/ES2238827T3/es not_active Expired - Lifetime
  • 1999-04-15 ID IDW20002325A patent/ID27687A/id unknown
  • 1999-04-15 BR BR9909729-0A patent/BR9909729A/pt not_active Application Discontinuation
  • 1999-04-15 AT AT99911971T patent/ATE290007T1/de active
  • 1999-04-15 EP EP99911971A patent/EP1073661B1/en not_active Expired - Lifetime
  • 1999-04-15 WO PCT/IB1999/000659 patent/WO1999054334A1/en active IP Right Grant
  • 1999-04-15 TR TR2000/03012T patent/TR200003012T2/xx unknown

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